JTEKT/Koyo DB matched pair · live catalog page 18
7317CDB FY
Manufacturer-published matched-pair dimensions, load ratings, fatigue limit, and limiting speed.
Live manufacturer specification row
Published specifications
- Designation
- 7317CDB FY
- Arrangement
- Back-to-back matched pair (DB)
- Bore d
- 85 mm
- Outside diameter D
- 180 mm
- Pair width B
- 82 mm
- Minimum corner radius r
- 3 mm
- Minimum corner radius r1
- 1.1 mm
- Dynamic load rating Cr
- 326 kN
- Static load rating C0r
- 261 kN
- Fatigue load limit Cu
- 16.7 kN
- Factor f0
- 13.5
- Grease limiting speed
- 4,900 rpm
- Published row text
- 7317CDB FY | 85 | 180 | 82 | 3 | 1.1 | 326 | 261 | 16.7 | 13.5 | 4900
Verification boundary
What still needs to match
Arrangement and contact angleConfirm DB arrangement, contact angle, precision, preload, and complete suffix.
Fits and geometryVerify shaft/housing seats, shoulders, fillets, spacers, and axial clamping.
DutyCheck combined radial/axial load, stiffness, speed, lubrication, temperature, and required life.
Current dataUse the linked JTEKT/Koyo calculation and CAD tools before ordering.
Related Koyo DB pairs
Same bore dimension
DB matched pair7217BDBD 150 mm · pair width 56 mmDB matched pair7217DBD 150 mm · pair width 56 mmDB matched pair7217CDBD 150 mm · pair width 56 mmDB matched pair7317BDBD 180 mm · pair width 82 mmDB matched pair7317DBD 180 mm · pair width 82 mmDB matched pair7317CDBD 180 mm · pair width 82 mmDB matched pair7917CDB FYD 120 mm · pair width 36 mmDB matched pair7017BDB FYD 130 mm · pair width 44 mm